You're not getting any responses because nobody here has any idea what a "Phoenix Magnum" is. For this reason, you're probably going to have to scrap everything except for the motors. If you're good with electronics, you could probably adapt the existing drivers, but none of us can really doing anything about it over the internet.
Take some pictures of your stepper motors and tell us everything about them... frame size (NEMA or non standard?), number of wires, number of phases, amps per phase, diameter of rotor, etc.